Multi-signature verification network

ABSTRACT

Systems and methods for authorizing a blockchain transaction. A verification network receives a transaction request for the blockchain transaction from a payer device including a first signature generated by a first private key associated with a payer. The verification network broadcasts a verification request to verification system(s) which assess pre-agreed threshold parameters. If the parameter(s) are satisfied, at least one verification system perfects the transaction by generating a second signature using a second private key, and broadcasts the transaction to the blockchain network. If the parameter(s) are not satisfied, verification offer(s) from among the verification system(s) including the second signature(s) are used to prompt the payer device to confirm the blockchain transaction by selecting at least one of the offer(s). The verification network receives selected offer(s) from the payer device and broadcasts the transaction to the blockchain network, in accordance with the selected offer(s) and the transaction request.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of U.S. patent application Ser. No.16/561,295 filed Sep. 5, 2019, now U.S. Pat. No. 10,621,579, which inturn claims the benefit of U.S. Provisional Patent Application No.62/727,824, entitled “MULTI-SIGNATURE VERIFICATION NETWORK”, filed Sep.6, 2018, the entire disclosures of all of which are incorporated byreference herein for all purposes.

FIELD OF THE DISCLOSURE

The present disclosure generally relates to systems and methods forauthorizing blockchain-based transactions of digital assets, and morespecifically, to a multi-signature authorization system including amulti-signature verification network that leverages a pool of trustedverification institutions to generate at least one signature and atleast one verification offer together with a payer signature, in orderto authorize blockchain-based transactions.

BACKGROUND

The use of blockchain technology for transactions involving digitalassets such as cryptocurrencies has become increasingly popular due tothe decentralized nature of transactions, the use of a mathematicallyverifiable ledger, near-immediate settlement, and isolation fromoperational, technical, or geo-political concentration risks. Althoughblockchain technology presents these advantages, managing cryptographickeys is burdensome and dangerous, exposing users to the dual threats ofelectronic theft and accidental loss of assets. Further, withnear-immediate settlement comes a lack of “claw-back” reversibility oftransactions, increasing the impact of fraud. Accordingly, there is aneed to provide the security, safety, and reversibility of traditionalcentralized payment systems without reinstating concentration risksposed by relying on any single service provider.

SUMMARY

Aspects of the present disclosure relate to systems, methods andnon-transitory computer readable media for authorizing a blockchaintransaction. In some examples, system may include a verification networkin communication with at least a payer computing device associated witha payer, a verification pool that includes one or more independentthird-party verification computing systems (e.g., verification providersor verification institutions), and a blockchain network. In someexamples, the verification network includes a computing system having aprocessor and a memory having programming instructions stored thereon,where the programming instructions, when executed by the processor,cause the system to perform an operation for authorizing the blockchaintransaction. The operation of the verification network includesreceiving, from the payer computing device, a partially-signedblockchain transaction (e.g., a transaction request). The transactionmay include a first signature, where the first signature may begenerated by a first private key created and managed by the payer (e.g.,a first private key associated with the payer). In one example, thefirst signature may be the only signature included in the(partially-signed) transaction. In some examples, the partially-signedtransaction may be enriched by the verification network with situationaldetails such as (without being limited to) time, value, geolocation,merchant statistics and/or any suitable information that may be usefulto a verification provider in analyzing the likelihood of attemptedfraud. Since, in an exemplary embodiment, the payer private key must beprotected by the payer, the nature of the present disclosuresignificantly mitigates the impact of unauthorized access to this payerprivate key, thereby significantly increasing the attractiveness ofexisting backup solutions.

The operation of the verification network further includes broadcastingthe partially-signed transaction and details relating to one or morepre-agreed threshold parameters (e.g., risk assessment details) to theone or more verification providers. The operation may further includeassessing, by at least one verification provider from among theverification pool, the one or more pre-agreed threshold parametersassociated with the partially-signed transaction. The assessing may be apart of a broader risk analysis procedure and the threshold parametersmay comprise one or more pre-agreed risk parameters. If the pre-agreedthreshold parameters are satisfied, the (at least one) verificationprovider may immediately perfect (e.g., “bless”) the transaction requestand broadcast the now-perfected blockchain transaction to the blockchainnetwork. Perfecting the transaction request may include generating asecond signature using a second private key (e.g., created andmaintained by the verification provider) and optionally imposing apre-agreed surcharge.

In the absence of pre-agreed threshold parameters, or if the pre-agreedthreshold parameters are not satisfied during the assessment, theoperation may further include generating, by at least one of the one ormore verification providers, one or more verification offers including arespective one or more second signatures and, optionally, in someexamples, one or more risk-related surcharges. Each of the one or moresecond signatures may be generated by a respective one of the one ormore verification providers using a second private key (e.g., createdand maintained by the verification provider). In some embodiments, theone or more verification providers may transmit one or more denials,rather than verification offers.

In an example operation of the present disclosure, the firstverification provider to assess the risk and perfect the transaction mayprevail and capture a previously-agreed fee. In the event that the riskanalysis performed by the verification provider determines that a risksurcharge is needed to offset risk, the operation may includetransmitting the one or more verification offers to the payer clientdevice and prompting the payer computing device to confirm theblockchain transaction by selecting at least one of the one or moreverification offers and receiving, from the payer client device, aselection of at least one offer of the one or more verification offers(thereby providing a perfected blockchain transaction). The operationmay conclude with broadcasting the perfected blockchain transaction tothe blockchain network.

In some examples, systems and methods of the present disclosure mayleverage the breakthroughs in real-time risk assessment that have beencreated via high-frequency trading to allow verification providers tocompete for individual transaction fees, while isolating the payer fromreliance on any single provider.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1A is a block diagram illustrating a computing environment forauthorizing blockchain transactions, according to an exemplaryembodiment.

FIG. 1B is a block diagram visually depicting one or more parties to ablockchain transaction, according to an exemplary embodiment.

FIG. 2 is a block diagram illustrating a computing environment forauthorizing blockchain transactions including a verification network,according to an exemplary embodiment.

FIG. 3 is a flow diagram illustrating a method of authorizing ablockchain transaction using a verification network, according to one ormore exemplary embodiments.

FIG. 4 is a flow diagram illustrating communication among one or morecomputing components for authorizing a blockchain transaction using averification network, according to one or more exemplary embodiments.

FIG. 5A is a block diagram illustrating one or more screenshots of aclient computing device, according to one or more exemplary embodiments.

FIG. 5B is a block diagram illustrating one or more screenshots of aclient computing device, according to one or more exemplary embodiments.

FIG. 6 is a block diagram illustrating a computing environment,according to one or more exemplary embodiments.

DETAILED DESCRIPTION

Aspects of the present disclosure relate to systems, methods andnon-transitory computer readable media for authorizing a blockchaintransaction. In some examples, system may include a verification networkin communication with at least a payer computing device associated witha payer, a verification pool that includes one or more independentthird-party verification computing systems (e.g., verification providersor verification institutions), and a blockchain network. In someexamples, the verification network includes a computing system having aprocessor and a memory having programming instructions stored thereon,where the programming instructions, when executed by the processor,cause the system to perform an operation for authorizing the blockchaintransaction. The operation includes receiving, from the payer computingdevice, a partially-signed blockchain transaction (e.g., a transactionrequest). The transaction may include a first signature, where the firstsignature may be generated by a first private key created and managed bythe payer (e.g., a first private key associated with the payer). In oneexample, the first signature may be the only signature included in the(partially-signed) transaction. In some examples, the partially-signedtransaction may be enriched by the verification network with situationaldetails such as (without being limited to) time, value, geolocation,merchant statistics and/or any suitable information that may be usefulto a verification provider in analyzing the likelihood of attemptedfraud. Since, in an exemplary embodiment of the present disclosure, thepayer private key must be protected by the payer, the nature of thepresent disclosure significantly mitigates the impact of unauthorizedaccess to this payer private key, thereby significantly increasing theattractiveness of existing backup solutions.

The operation of the verification network further includes broadcastingthe partially-signed transaction and details relating to one or morepre-agreed threshold parameters (e.g., risk assessment details) to theone or more verification providers. The operation may further includeassessing, by at least one verification provider from among theverification pool, the one or more pre-agreed threshold parametersassociated with the partially-signed transaction. The assessing may be apart of a broader risk analysis procedure and the threshold parametersmay comprise one or more pre-agreed risk parameters. If the pre-agreedthreshold parameters are satisfied, the (at least one) verificationprovider may immediately perfect (e.g., “bless”) the transaction requestand broadcast the now-perfected blockchain transaction to the blockchainnetwork. Perfecting the transaction request may include generating asecond signature using a second private key (e.g., created andmaintained by the verification provider) and optionally imposing apre-agreed surcharge.

In the absence of pre-agreed threshold parameters, or if the pre-agreedthreshold parameters are not satisfied during the assessment, theoperation may further include generating, by at least one of the one ormore verification providers, one or more verification offers including arespective one or more second signatures and, optionally, in someexamples, one or more risk-related surcharges. Each of the one or moresecond signatures may be generated by a respective one of the one ormore verification providers using a second private key (e.g., createdand maintained by the verification provider). In some embodiments, theone or more verification providers may transmit one or more denials,rather than verification offers.

In an example operation of the present disclosure, the firstverification provider to assess the risk and perfect the transaction mayprevail and capture a previously-agreed fee. In the event that the riskanalysis performed by the verification provider determines that a risksurcharge is needed to offset risk, the operation may includetransmitting the one or more verification offers to the payer clientdevice and prompting the payer computing device to confirm theblockchain transaction by selecting at least one of the one or moreverification offers and receiving, from the payer client device, aselection of at least one offer of the one or more verification offers(thereby providing a perfected blockchain transaction). The operationmay conclude with broadcasting the perfected blockchain transaction tothe blockchain network.

In some examples, systems and methods of the present disclosure mayleverage the breakthroughs in real-time risk assessment that have beencreated via high-frequency trading to allow verification providers tocompete for individual transaction fees, while isolating the payer fromreliance on any single provider.

In conventional blockchain transaction systems, two parties may directlytransact with one another. For example, a payee may share a publicaddress (e.g., public key) to which a payer is to transmit an amount ofcryptocurrency. The payer may then initiate a transaction that has oneor more inputs and one or more outputs. The one or more inputs maycorrespond to a public key of the payer (e.g., an address from which thecryptocurrency originates) and a signature that was generated using aprivate key of the payer. The one or more outputs may correspond to thepublic address of the payee. The transaction may be transmitted to ablockchain network for verification (e.g., to verify that the payeractually has the amount of digital assets, e.g., cryptocurrency, thatthe payer alleges to have, and that the payer has not transmitted thesedigital assets).

Such conventional systems, however, suffer from one or more limitations.For example, should a user's private key become compromised (e.g.,stolen), the fraudulent party that obtained the user's private key hasnecessarily stolen all cryptocurrency associated therewith. Further,should a user lose their private key, all cryptocurrency associatedtherewith is effectively lost.

One or more systems currently exist to combat the limitations of asingle signature transaction. For example, one or more systems mayprovide a multi-signature service. A multi-signature transactionrequires that two or more signatures be generated for each transaction.With conventional multi-signature systems, each system functions toprovide the additional signature that may be necessary to perfect atransaction. In other words, in a conventional multi-signature service,a signature from the payer and a signature from the multi-signatureservice is needed for any given transaction.

The one or more techniques disclosed herein provide a verificationnetwork that improves upon conventional multi-signature services. Forexample, the verification network described herein acts as a middlemanbetween parties to a transaction and one or more trusted verificationinstitutions. Upon receiving a transaction request from a payer, theverification network may broadcast a verification request to a pool ofpre-defined verification institutions. Each verification institution maybe a trusted entity that can “bless” or verify the transaction. At leastone signature is needed from the pool of verification institutions toperfect (i.e., “bless”) the respective transaction. Accordingly, thesystem of the present disclosure eliminates dependency on a singleentity, as currently required by conventional multi-signature services,and instead relies on a pool, or network, of verification institutionsthat may verify the transaction. Moreover, the system of the presentdisclosure also eliminates control over a payer's digital assets thatmay result from two or more parties colluding to release or take controlof the digital assets.

The term “user” as used herein includes, for example, a person or entitythat owns a computing device (which may include a wireless device); aperson or entity that operates or utilizes a computing device; or aperson or entity that is otherwise associated with a computing device(which may include a wireless device). It is contemplated that the term“user” is not intended to be limiting and may include various examplesbeyond those described.

Moreover, examples of the present disclosure described below refer toblockchain-based transactions involving digital assets such as, forexample (but not limited to), cryptocurrency. In general, systems andmethods of the present disclosure may be configured to authorizetransactions involving any suitable digital asset that may be tokenized,including security tokens, tokenized real estate, and one or morecryptocurrencies (e.g., digital or virtual currency that may usecryptography for security). In general, cryptocurrency may include,without being limited to, Bitcoin, Litecoin, Ether, etc. In fact, forpurposes of this disclosure, the term cryptocurrency should beunderstood to include any digital or virtual assert or currency.

In some examples, transactions with respect to the present disclosureare referred to as blockchain transactions. In other examples,transactions are referred to as cryptocurrency transactions. As usedherein, both blockchain transactions and cryptocurrency transactionsrefer to transactions of cryptocurrency (or any suitable digital asset)that uses a blockchain network.

FIG. 1A is a block diagram illustrating a computing environment 100 forauthorizing blockchain transactions, according to an example embodiment.Computing environment 100 may include at least client device 102, clientdevice 104, verification pool 106, verification network 105 andblockchain network 108. Communication among client device 102, clientdevice 104, verification pool 106 and blockchain network 108 may beperformed via verification network 105. Although one client device 102and one client device 104 are shown in FIG. 1A, it is understood thatenvironment 100 may include any number of client devices 102 and/or anynumber of client devices 104.

In the examples described herein, client device 102 may be operated by auser representing a payer. For example, client device 102 may be amobile device, a tablet, a desktop computer, or any computing systemhaving the capabilities described herein.

In the examples described herein, client device 104 may be operated by auser representing a payee. For example, client device 104 may be amobile device, a tablet, a desktop computer, or any computing systemhaving the capabilities described herein.

Client device 102 and client device 104 may communicate withverification network 105. Verification network 105 may be representativeof a service that supports multi-signature functionality. In general,multi-signature functionality is a service that requires two or moresignatures (e.g., two or more private keys) to authorize acryptocurrency transaction. Verification network 105 may be configuredto store one or more private keys associated with each user orsubscriber. For example, verification network 105 may be configured tostore one or more private keys associated with at least the payer to atransaction (e.g., client device 102).

Unlike conventional multi-signature services, verification network 105does not perform the verification of cryptocurrency transactions betweenparties to a transaction. Rather, verification network 105 may beconfigured to facilitate the verification thereof by broadcasting aproposed transaction to verification pool 106.

Verification pool 106 may be representative of one or more trustedfinancial institutions (e.g., verification providers) that may verify acryptocurrency transaction. In other words, verification pool 106 mayinclude one or more financial institutions that are required to act as asecond party to a multi-signature transaction. Verification pool 106 mayinclude one or more verification institutions 110 ₁, 110 ₂, . . . , 110_(n) (generally “verification institution 110”, where n is an integergreater than or equal to 1). In some embodiments, each verificationinstitution 110 may be pre-approved with verification network 105. Whena transaction request is received from client device 102 at verificationnetwork 105, verification network 105 may broadcast a verificationrequest to each verification institution 110. Each verificationinstitution 110 may then asses a risk associated with verifying thetransaction. Based on this assessment, each verification institution 110may generate a verification offer (described further below) to betransmitted to client device 102. In some embodiments, one or moreverification institutions 110 may prompt client device 102 toauthenticate with verification institution 110. For example, averification institution 110 may request verification network 105 totransmit an identification request to the payer (e.g., client device102) to confirm the identity of the payer for risk analysis purposes.Because each verification institution 110 is competing with one or moreother verification institutions 110, each verification institution 110may race to assess the risk associated with a transaction and generatean offer that competes with other offers. Accordingly, those skilled inthe art may readily understand that verification institutions 110 maybalance the trade-off between quickly generating a verification offerand accurately assessing a risk associated with the verification offer.

When each verification institution 110 generates a verification offer,verification institution 110 may access a private key associated withthe payer (e.g., created and/or managed by the payer) via verificationnetwork 105. Each verification institution 110 may then generate asecond signature for the transaction, using the private key hosted byverification network 105. The second signature for the transaction maybe transmitted by verification institution 110 to verification network105 with the verification offer. In some examples, the second signaturemay represent a private key created and/or maintained by verificationinstitution 110 (a verification provider) and/or provided viaverification network 105. Accordingly, verification network 105 receivesat least two signatures (e.g., a first signature from client device 102and a second signature from each verification institution 110) which arerequired for the transaction.

In some embodiments, each verification institution 110 may have apre-established relationship with a user (or subscriber) of verificationnetwork 105. For example, each verification institution 110 may promptthe user to submit a verification application, such that eachverification institution 110 may vet the user similar to a credit cardapplication process. Accordingly, for each user, each verificationinstitution 110 may set one or more pre-arranged limits, parameters, orcontractual duties for each transaction. For example, for a given user,verification institution 110 may set a transaction limit of Bitcoin,Litecoin, Ether, etc. to a transaction. In another example, averification institution 110 may attempt to limit its liability to atransaction, by contractually agreeing with each user that verificationinstitution 110 is only liable for up to 50% of the transaction amount.Accordingly, when selecting a verification offer, a user may base thedecision on, for example, which verification institution 110 offers thebest refund policy.

Verification network 105 may receive the one or more verification offersfrom the one or more verification institutions 110 (i.e., verificationinstate 110 ₁, 110 ₂, . . . , 110 _(n)). Verification network 105 maytransmit the one or more verification offers to client device 102 andprompt client device 102 to select an offer among the verificationoffer(s). Verification network 105 may receive from client device 102 anindication of a selection of a particular verification offer.Verification network 105 may then broadcast the transaction toblockchain network 108 (responsive to the selected offer) for posting.Blockchain network 108 may include one or more computing devices forprocessing a blockchain transaction, by generating a block that is addedto a blockchain that includes a record for the transaction. Theblockchain represents a decentralized, public ledger of all transactionsof a blockchain-based currency.

The role played by verification institution 110 is similar to a verifierof a transaction. For example, verification institution 110 may beresponsible for verifying that the payer (e.g., client device 102) isindeed the payer and that the payer has the alleged amount ofcryptocurrency for the transaction.

In conventional blockchain systems, transactions between a payer andpayee are irreversible, because once a payer relinquishes control of theamount of cryptocurrency, the payer can only be made whole if the payeeagrees to refund the payer. The present system addresses this limitationby providing an intermediary verification network 105 and verificationpool 106. When one or more verification institutions 110 assess a riskassociated with a particular transaction, proposes a verification offer,and receives an acceptance of that verification offer, the respectiveverification institution 110 has taken responsibility for thetransaction. In other words, if a fraudulent third party gained accessto the payer's account, verification institution 110 is responsible formaking the payer whole (i.e., refunding the payer the amount transferredto the payee). In this manner, verification institution 110 (e.g., averification provider) may “eat the charges” for any riskmiscalculations, thereby reducing the impact of fraud on the payer.Moreover, because various verification institutions 110 (e.g.,verification providers) of verification pool 106 may compete to perfecta transaction through one or more verification offers, environment 100may spread out any risk miscalculations among the verification providersof verification pool 106, thereby reducing any concentration risk thatis conventionally posed by relying on a single verification serviceprovider.

Further, because verification network 105 supports multi-signaturefunctionality, for each transaction, two or more signatures arenecessary to perfect the transaction. In conventional multi-signaturesystems (e.g., two-signature system), any individual party that hasaccess to at least two of the payer's private keys may take control ofthe payer's cryptocurrency. Similarly, in conventional systems, any twoactors may collude to release or take control of an individual'scryptocurrency by gaining access to at least two private keys of theindividual. The present disclosure addresses these limitations ofconventional systems by anticipating the possibility that, when theproposed transaction is broadcast to verification pool 106, two or moreverification institutions 110 may collude to release the payer's funds.To address this, the computing device associated with the payer (e.g.,client device 102) is a mandatory party to the transaction. In otherwords, even though one or more verification institutions 110 inverification pool 106 may collude and provide the necessary number ofsignatures required for a specific multi-signature transaction,verification network 105 will not perfect the transaction withoutreceiving a signature from the payer.

Examples of client device 102, verification network 105 and verificationinstitution 110 _(n) are described further below with respect to FIG. 2.

FIG. 1B is a block diagram 150 visually depicting one or more parties toa cryptocurrency transaction, according to example embodiments. Asshown, block diagram 150 includes verification institution 110 ₁,verification institution 110 ₂, and verification institution 110 _(n) asthe one or more verification institutions 110. For this transaction, atleast two signatures are needed to perfect the transaction from payer topayee.

As illustrated, the verification offers 122-1 and 122-2 submitted byinstitution 110 ₁ and institution 110 ₂, respectively, have beenselected by payer (e.g., client device 102). In conventional systems,because a minimum of two signature are required, the signature (2/2)generated by verification institution 110 ₁ and the signature (2/2)generated by verification institution 110 ₂ would be sufficient toperfect the transaction. Those skilled in the art may readily understandthat, if verification network 105 were compromised, and two or moreprivate keys associated with client device 102 were accessed,verification institution 110 ₁ and verification institution 110 ₂ couldcollude to release or gain access to the payer's cryptocurrency.However, such signatures would not be sufficient to perfect thetransaction in computing environment 100 because client device 102(including signature 120 generated by client device 102) is a mandatoryparty to the transaction. Accordingly, at least one of the at least tworequired signatures must be generated by client device 102 (or moregenerally, the payer). Thus, in the example shown in FIG. 1B, signatures124 to perfect the transaction (e.g., for payment) includes signatures(2/3) (i.e., signature 120 of client device 102 and signatures (2/2) ofrespective verification institutions 110 ₁.110 ₂).

FIG. 2 is a block diagram illustrating computing environment 200 forauthorizing blockchain transactions, according to one or more exemplaryembodiments. As illustrated, computing environment 200 includes at leastclient device 102, at least one verification institution 110, andverification network 105. Client device 102, verification institution110 and verification network 105 may communicate via at least onenetwork 205.

Network 205 may be of any suitable type, including individualconnections via the Internet, such as cellular or Wi-Fi networks. Insome embodiments, network 205 may connect terminals, services, andmobile devices using direct connections, such as, without being limitedto, radio frequency identification (RFID), near-field communication(NFC), Bluetooth™, low-energy Bluetooth™ (BLE), Wi-Fi™, ZigBee™, ambientbackscatter communication (ABC) protocols, universal serial bus (USB),wide area network (WAN), or local area network (LAN). Because theinformation transmitted may be personal or confidential, securityconcerns may dictate one or more of these types of connections beencrypted or otherwise secured. In some embodiments, however, theinformation being transmitted may be less personal, and therefore, thenetwork connections may be selected for convenience over security.

Network 205 may include any type of computer networking arrangement usedto exchange data. For example, network 205 may be the Internet, aprivate data network, a virtual private network using a public networkand/or other suitable connection(s) that enables components in computingenvironment 200 to send and receive information therebetween.

Client device 102 may include application 252 and wallet 254.Application 252 may be representative of a web browser that allowsaccess to a website or a stand-alone application. Client device 102 mayaccess application 252 to access functionality of verification network105. Client device 102 may communicate over network 205 to request awebpage, for example, from web client application server 206 ofverification network 105. For example, client device 102 may beconfigured to execute application 252 to access one or morefunctionalities of verification network 105. The content that isdisplayed to client device 102 may be transmitted from web clientapplication server 206 to client device 102, and subsequently processedby application 252 for display through an interactive graphical userinterface (GUI) rendered by client device 102.

Wallet 254 may be representative of a digital storage location on clientdevice 102. Wallet 254 may be configured to store one or more key pairs255 associated with a user's blockchain account (e.g., account 212). Asillustrated, each key pair 255 may include a private key 256 and acorresponding public key 258.

Each private key 256 may be an alphanumeric string that allows a user ofclient device 102 to transmit (e.g., spend) one or more cryptocurrenciesto another individual or entity (i.e., another cryptocurrency address).Private key 256 may be used to sign each cryptocurrency transaction. Forexample, a user may input private key 256 into a signature algorithmwhich outputs a signature that may be verified by verification network105. Any individual or entity that has access to private key 256 may beable to access the one or more cryptocurrencies corresponding to privatekey 256.

Each public key 258 may correspond to a respective private key 256. Insome embodiments, public key 258 may be derived from its respectiveprivate key 256. Public key 258 may be an alphanumeric string thatcorresponds to a public address of an individual or entity. For example,when a payer or transmitter attempts to transmit an amount ofcryptocurrency to a user of client device 102, the payer or transmitterdirects the transmittal to the address defined by public key 258. Publickey 258 may be public because, although derived from a respectiveprivate key 256, it is near impossible to reverse engineer private key256.

Verification network 105 may include management system 202 and database204. Management system 202 may be representative of a computing system.Management system 202 may include web client application server 206,account handler 208, transaction agent 209, and verification agent 210.

Each of account handler 208, transaction agent 209, and verificationagent 210 may be comprised of one or more software modules. The one ormore software modules may be collections of code or instructions storedon a media (e.g., memory of management system 202) that represent aseries of machine instructions (e.g., program code) that implements oneor more algorithmic steps. Such machine instructions may be the actualcomputer code that a processor of management system 202 interprets toimplement the instructions or, alternatively, may be a higher level ofcoding of the instructions that is interpreted to obtain the actualcomputer code. The one or more software modules may also include one ormore hardware components. One or more aspects of the algorithm may beperformed by the hardware components (e.g., circuitry) itself, ratherthan as a result of an instruction.

Account handler 208 may be configured to manage one or more accounts 212associated with one or more users. For example, account handler 208 maycommunicate with database 204. As illustrated, database 204 may includeone or more accounts 212. Each account 212 may include one or more keypairs 215 and one or more transactions 218. Each key pair 215 mayinclude a private key 214 and a corresponding public key 216. Accounthandler 208 may generate one or more key pairs 215 upon a userregistering with verification network 105. In some embodiments, accounthandler 208 may generate one or more key pairs 255 stored on clientdevice 102.

Each private key 214 may be an alphanumeric string that allows one ormore verification institutions 110 to verify a particular transactionrequest. Private key 214 may be used to sign each cryptocurrencytransaction. For example, a verification institution 110 may access aprivate key 214 from verification network 105, and input private key 214into a signature algorithm which outputs a signature that may beverified by verification network 105. Any individual or entity that hasaccess to private key 214 may be able to access the one or morecryptocurrencies corresponding the private key 214.

Each public key 216 may correspond to a respective private key 214. Insome embodiments, public key 216 may be derived from its respectiveprivate key 214. Public key 216 may be an alphanumeric string thatcorresponds to a public address associated with an individual or entity.For example, when a verification institution 110 assesses a riskassociated with a transaction request, verification institution 110 mayidentify a payer using public key 216. Public key 216 may be publicbecause, although derived from a respective private key 214, it is nearimpossible to reverse engineer private key 214.

Transaction agent 209 may be configured to manage one or moretransactions 218 associated with each account 212. For example,transaction agent 209 may act as a “middle-man” between client device102 and one or more verification institutions 110. In operation, forexample, transaction agent 209 may transmit a transaction request to oneor more verification institutions 110. Each of the one or moreverification institutions 110 may race to assess the risk associatedwith verifying the transaction, and provide an offer to the payer forverifying the transaction. For example, each of the one or moreverification institutions 110 may transmit to verification network 105 awillingness to verify the transaction along with a fee for theirverification (e.g., a verification offer). The verification offer may,in turn, be transmitted from verification network 105 to client device102 for display. Upon receiving input from client device 102 thatcorresponds to a selection of a verification offer, verification network105 may transmit the offer acceptance to the respective verificationinstitution 110.

After a transaction is finalized between a payer (e.g., client device102) and a payee (e.g., client device 104), transaction agent 209 mayrecord the transaction in database 204. For example, transaction agent209 may record the payer to the transaction and the payee to thetransaction, along with the transaction amount, in one or moretransactions 218. Accordingly, if, for example, the transaction waslater deemed fraudulent, transaction agent 209 may notify theverification institution 110 that verified the transaction, such thatverification institution 110 can reimburse the payer to the transaction.

Verification agent 210 may be configured to verify one or moretransactions between a payer (e.g., client device 102) and a payee(e.g., client device 104). Verification agent 210 may, for example,verify a first signature transmitted from client device 102 toverification network 105 that signals the initiation of the transaction.The first signature may correspond to a first signature needed for amulti-signature transaction. Verification agent 210 may further beconfigured to verify a second signature transmitted from a verificationinstitution 110, in response to generation of a verification offer fromverification institution 110. The second signature may correspond to asecond signature (or additional signature) needed for a multi-signaturetransaction.

Upon receiving the necessary number of signatures required for themulti-signature transaction (e.g., two or more signatures), verificationinstitution 110 may communicate with transaction agent 209 to completethe transaction. Transaction agent 209 may broadcast the completedtransaction to blockchain network 108, such that the transaction may beposted thereto.

Verification institution 110 may be representative of a computing systemassociated with any suitable entity such as, for example, a particularfinancial institution or other trusted entity. Verification institution110 may include computing device 260. Computing device 260 may be amobile device, a tablet, a desktop computer, or any computing systemhaving the capabilities described herein. Computing device 260 mayinclude application 262 and risk analyzer 264.

Application 262 may be representative of a web browser that allowsaccess to a website or a stand-alone application. Computing device 260may access application 262 to access functionality of verificationnetwork 105. Computing device 260 may communicate over network 205 torequest a webpage, for example, from web client application server 206of verification network 105. For example, computing system 260 may beconfigured to execute application 262 to access one or morefunctionalities of verification network 105. The content that isdisplayed to computing device 260 may be transmitted from web clientapplication server 206 to computing device 260, and subsequentlyprocessed by application 262 and, in some examples, may be displayedthrough a GUI rendered by computing system 260.

Risk analyzer 264 may be comprised of one or more software modules. Theone or more software modules may be collections of code or instructionsstored on a media (e.g., memory of computing device 260) that representa series of machine instructions (e.g., program code) that implementsone or more algorithmic steps. Such machine instructions may be theactual computer code a processor of computing device 260 interprets toimplement the instructions or, alternatively, may be a higher level ofcoding of the instructions that is interpreted to obtain the actualcomputer code. The one or more software modules may also include one ormore hardware components. One or more aspects of the algorithm may beperformed by the hardware components (e.g., circuitry) itself, ratherthan as a result of an instruction.

Risk analyzer 264 may be configured to assess a risk associated withverifying a cryptocurrency transaction between the payer (e.g., clientdevice 102) and the payee (e.g., client device 104). In someembodiments, risk analyzer 264 may asses the risk associated withverifying the cryptocurrency transaction by taking in account one ormore parameters that include, but are not limited to, a current locationof client device 102 (e.g., at a location associated with the user), anamount of cryptocurrency to be transmitted, a frequency of transactionsbetween the payer (e.g., client device 102) and the payee (e.g., clientdevice 104), the identity of the payee (e.g., a merchant), the time ofday of the transaction, a purchase history of the payer, and the like.In some examples, risk analysis by risk analyzer 264 may includecontacting the payer (e.g., via a call or text) to confirm thetransaction. Based on the risk assessment performed by risk analyzer264, verification institution 110 may generate a verification offer tobe transmitted to client device 102.

Because, however, verifying the transaction may subject verificationinstitution 110 to financial risk (e.g., if the transfer from clientdevice 102 to client device 104 was fraudulent), verificationinstitution 110 may charge the payer a fee for their verificationservice. For example, when risk analyzer 264 determines that there isminimal risk associated with verifying the transaction, verificationinstitution 110 may propose a minimal fee to client device 102 in theverification offer. In another example, when risk analyzer 264determines that there is a higher risk associated with verifying thetransaction, verification institution 110 may propose a higher fee toclient device 102 in the verification offer. Further, in someembodiments, verification institution 110 may propose a surge fee to atransaction. For example, in those embodiments in which verificationnetwork 105 broadcasts a higher volume of verification requests,verification institution 110 may propose a surge fee for its services.

FIG. 3 is a flow diagram illustrating a method 300 of authorizing ablockchain transaction using verification network 105, according to oneor more exemplary embodiments. Method 300 may begin at step 302.

At step 302, verification network 105 may receive a transaction requestfrom client device 102 (e.g., via a payment card, an application, amobile phone, online, etc.). The transaction request may include atleast a designation of the payer (e.g., client device 102), the payee(e.g., client device 104), and the amount of cryptocurrency specified inthe transaction. For example, the transaction request may include apublic address (e.g., public key 258) corresponding to client device102, a signature generated by client device 102 using private key 256),a public address corresponding to client device 104, and the amountspecified in the transaction. Further, in some embodiments, thetransaction request may also specify a number of signatures required forthe multi-signature authorization. For example, in some embodiments, thetransaction request may specify that at least one verificationinstitution 110 is necessary for verification. In another example, thetransaction request may specify that at least two of the verificationinstitutions 110 are necessary for verification. In some examples, thetransaction request may represent a partially-signed blockchaintransaction, that may include a first signature generated by the clientdevice 102 using private key 256, but may not include any secondsignatures needed to perfect the blockchain transaction.

At step 304, verification network 105 may broadcast a verificationrequest to verification pool 106. The verification request may includeone or more parameters associated with the transaction request. Suchparameters may include, but are not limited to, the public address(e.g., public key 258) corresponding to client device 102, a publicaddress associated with client device 104, and the amount specified inthe transaction. In some examples, verification network 105 maydetermine and include situational details associated with thepartially-signed transaction that may be useful (to verification pool106) in analyzing a likelihood of attempted fraud. Non-limiting examplesof situational details may include a time of the transaction, a value ofthe transaction, a geolocation of client device 102, any merchantstatistics, etc. In some examples, the verification request broadcast byverification network 105 may include the partially-signed transaction(from client device 102) and any additional information and/or riskassessment details (e.g., parameters, situational details, etc.)provided by verification network 105. Thus, in some examples, thepartially-signed transaction may be enriched by the information providedby verification network 105. In some embodiments, the one or moreparameters may further include a number of additional signatures neededfrom verification pool 106 to complete the multi-signature transaction.

At step 306, verification network 105 may receive one or moreverification offers based on a risk analysis of the transaction request.For example, verification network 105 may receive one or moreverification offers from one or more verification institutions 110 to betransmitted to client device 102. Each verification offer may begenerated by a verification institution 110 based on a determined riskwith verifying the transaction. Each verification offer may include averification charge associated therewith.

At step 308, verification network 105 may prompt the payer to select averification offer from a respective verification institution 110.Verification network 105 may transmit the one or more verificationoffers to client device 102 for display. Client device 102 may, in turn,push the one or more verification offers to client device 102, promptingthe payer to select from among the one or more verification offers.

At step 310, verification network 105 may receive, from client device102, an indication of a selection of at least one verification offer.For example, client device 102 may receive input via a GUI displayedthereon, which corresponds to a selection of a verification offer from aparticular verification institution 110. Client device 102 may translatethe input to a message that is transmitted to verification network 105.The message may indicate the verification offer selected by the payer.

At step 312, verification network 105 may broadcast the transactionbetween client device 102 and client device 104 to blockchain network108. For example, upon determining that the necessary number ofsignatures required by the transaction request is met, verificationnetwork 105 may transmit the transaction between payer and payee toblockchain network 108 for posting to the blockchain. In some examples,the transaction may also take into account any surcharge fee associatedwith the selected verification offer(s).

In some examples, the verification request (step 304) may include thepartially-signed transaction (e.g., the transaction request) and detailsrelating to one or more pre-agreed threshold parameters (e.g., riskassessment details). Responsive to the broadcasted verification request(step 304), at least one verification institution 110 (e.g.,verification institution 110 ₂) among verification pool 106 may assessthe pre-agreed threshold parameter(s) associated with thepartially-signed transaction. The assessing may be a part of a broaderrisk analysis procedure and the threshold parameter(s) may comprise oneor more pre-agreed risk parameters. If the pre-agreed thresholdparameter(s) are satisfied, the (at least one) verification institution110 (e.g., verification institution 110 ₂) may immediately perfect(e.g., “bless”) the transaction request and broadcast the now-perfectedblockchain transaction to blockchain network 108 (e.g., bypassing steps306-310). Perfecting the transaction request may include generating asecond signature using a second private key (e.g., created andmaintained by the verification provider) and optionally imposing apre-agreed surcharge. In some examples, verification institution 110(e.g., verification institution 110 ₂) may broadcast the perfectedtransaction directly to blockchain network 108 and/or via verificationnetwork 105. In some examples, a first verification institution 110(e.g., verification institution 110 ₂) to assess the risk, perfect thetransaction (according to the previously-agreed upon fee) and broadcastthe perfected transaction (e.g., the now fully-signed transactionincluding the first signature from client device 102 and the secondsignature from verification institution 110 ₂) may prevail and capturethe previously-agreed fee.

In the absence of pre-agreed threshold parameter(s), or if thepre-agreed threshold parameter(s) are not satisfied during theassessment, the operation may further include generating, by at leastone of verification institutions 110, a respective one or moreverification offer(s) including a respective one or more secondsignatures and, optionally, in some examples, one or more risk-relatedsurcharges. Each of the second signature(s) may be generated by arespective one of verification institutions 110 using a respectivesecond private key (e.g., created and maintained by a respectiveverification institution 110). The verification offer(s) may betransmitted to and received by verification network 105 (step 306) andstep 306 may proceed to steps 308-310 (as discussed above). In someembodiments, verification institution(s) 110 may transmit one or moredenials, rather than verification offers. Thus, in some examples, whenverification institution(s) 110 determine, from the risk analysis, thata risk surcharge is needed to offset risk, the verification offer(s) mayinclude the requested surcharge and an indication to prompt clientdevice 102 to select a verification offer. Based on the indication toprompt the payer, verification network 105 may prompt client device 102to select a verification offer and may receive a selection from clientdevice 102 (as described above at steps 308-310). Responsive to theselection from client device 102, verification network 105 may thenbroadcast the now perfected transaction (e.g., including the firstsignature from client device 102 and the second signature in theselected verification offer) to blockchain network 108 (step 312). Inthis manner, verification network 105 may cause the payer (via clientdevice 102) to confirm the blockchain transaction.

FIG. 4 is a flow diagram illustrating a method 400 of communicationamong one or more computing components for authorizing a blockchaintransaction using verification network 105, according to one or moreexemplary embodiments. Method 400 may begin at step 402.

At step 402, client device 102 may transmit a transaction request toverification network 105. The transaction request may include at least adesignation of the payer (e.g., client device 102), the payee (e.g.,client device 104), and the amount of cryptocurrency specified in thetransaction. For example, the transaction request may include a publicaddress (e.g., public key 258) corresponding to client device 102, asignature generated by client device 102 using private key 256), apublic address corresponding to client device 104, and the amountspecified in the transaction. Further, in some embodiments, thetransaction request may also specify a number of signatures required forthe multi-signature authorization. For example, in some embodiments, thetransaction request may specify that at least one verificationinstitution 110 is necessary for verification. In another example, thetransaction request may specify that at least two of the verificationinstitutions 110 is necessary for verification.

At step 404, verification network 105 may receive the transactionrequest from client device 102. In some embodiments, upon receiving thetransaction request from client device 102, verification network 105 mayverify that the payer has indeed signed the transaction. For example,verification network 105 may verify that client device 102 transmittedthe signature for the transaction.

At step 406, verification network 105 may broadcast a verificationrequest to verification pool 106. The verification request may includeone or more parameters associated with the transaction request. Suchparameters may include, but are not limited to, the public address(e.g., public key 258) corresponding to client device 102, a publicaddress associated with client device 104, and the amount specified inthe transaction. In some embodiments, the one or more parameters mayfurther include a number of additional signatures needed fromverification pool 106 to complete the multi-signature transaction.

At step 408, verification institution 110 may receive the broadcastedverification request from verification network 105. Although the belowoperations are discussed generally with respect to one or moreverification institutions 110, those skilled in the art may readilyunderstand that it is not required for all verification institutions 110in verification pool 106 to perform all of the operations describedbelow.

At step 410, verification institution 110 may asses a risk associatedwith verifying the transaction request. For example, risk analyzer 264may be configured to assess a risk associated with verifying thecryptocurrency transaction between the payer (e.g., client device 102)and the payee (e.g., client device 104). In some embodiments, riskanalyzer 264 may asses the risk associated with verifying thecryptocurrency transaction by taking in account one or more parametersthat include, but are not limited to, a current location of clientdevice 102 (e.g., at a location associated with the user), an amount ofcryptocurrency to be transmitted, a frequency of transactions betweenthe payer (e.g., client device 102) and the payee (e.g., client device104), and the like. Based on the risk assessment performed by riskanalyzer 264, verification institution 110 may generate a verificationoffer to be transmitted to client device 102.

At step 412, verification institution 110 may assign a verification feeto the verification offer based on the risk assessment analysis. Forexample, verification institution 110 may assign a fee to theirverification service based on the risk associated with verifying aparticular transaction. For example, if risk analyzer 264 determinesthat there is minimal risk associated with verifying the transaction,verification institution 110 may propose a minimal fee to client device102 in the verification offer. In another example, if risk analyzer 264determines that there is a higher risk associated with verifying thetransaction, verification institution 110 may propose a higher fee toclient device 102 in the verification offer.

At step 414, verification institution 110 may access a private keyassociated with the payer. For example, upon generating a verificationoffer, verification institution 110 may request from verificationnetwork 105 a private key (e.g., private key 214) that is hosted byverification network 105 and associated with the payer (e.g., clientdevice 102).

At step 416, verification institution 110 may generate a signature usingthe accessed private key. For example, verification institution 110 maygenerate a second (or third, fourth, etc.) signature for the transactionusing private key 214. By generating a second signature prior totransmitting the verification offer to client device 102, thetransaction may be completed as soon as the payer selects a verificationoffer.

At step 418, verification institution 110 may transmit the verificationoffer and the second (or additional) signature to verification network105. At step 420, verification network 105 may receive the verificationoffer and the second signature from verification institution 110.

At step 422, verification network 105 may prompt the payer to select averification offer from a respective verification institution 110.Verification network 105 may transmit the one or more verificationoffers to client device 102 for display. The verification offer mayinclude the verification fee associated therewith.

At step 424, client device 102 may receive the prompt from verificationnetwork 105. For example, client device 102 may receive the one or moreverification offers from verification network 105 via application 252executing thereon.

At step 426, client device 102 may generate a GUI displaying the one ormore verification offers. The GUI generated by client device 102 may bedisplayed to the payer via a display associated with client device 102.For example, the GUI may be displayed via an external display device(e.g., a monitor) associated with client device 102. In anotherembodiment, the GUI may be displayed via a touchscreen associated withclient device 102. The GUI may include the one or more verificationoffers and the one or more verification fees associated therewith.

At step 428, client device 102 may receive an input that corresponds toa selection among the verification offer(s). For example, client device102 may receive an input, via the GUI, a selection of a verificationoffer. At step 430, client device 102 may transmit a verification offeracceptance to verification network 105.

At step 430, verification network 105 may receive the selection of theverification offer acceptance from client device 102. At step 432,verification network 105 may notify a respective verificationinstitution 110 of the verification offer acceptance. For example,verification network 105 may transmit a message to a respectiveverification institution 110 associated with the verification offer.

At step 434, verification network 105 may record the transaction detailsin database 204. for example, verification network 105 may record thetransaction date, the transaction amount, the payer public address, thepayee public address, any verification fees and one or more verificationinstitutions 110 associated with one or more accepted verificationoffers in database 204. By recording the transaction details in database204, should the transaction later be deemed fraudulent (e.g., afraudulent third party obtained the payer's private key (e.g., privatekey 256), the transaction may be reversible. For example, the one ormore verification institutions 110 whose verification offers wereaccepted are now liable for refunding the payer the transaction amount.

At step 436, verification network 105 may broadcast/post the transactionbetween client device 102 and client device 104 to blockchain network108. For example, upon determining that the necessary number ofsignatures required by the transaction request is met, verificationnetwork 105 may transmit the transaction between payer and payee toblockchain network 108 for posting to the blockchain. In some examples,the transaction may also reflect any verification fees.

Although not shown in FIG. 4, as discussed above, in some examples,after step 408 (e.g., at step 410), verification institution(s) 110 mayassess pre-agreed threshold parameter(s) associated with the transactionrequest and determine whether the pre-agreed threshold parameter(s) havebeen satisfied. If at least one of verification institutions 110determine that the pre-agreed threshold parameter(s) are satisfied, theat least one verification institution 110 may perfect the blockchaintransaction (as discussed above) and broadcast the perfected blockchaintransaction to blockchain network 108 (thereby bypassing, for example,steps 412-434). If the pre-agreed threshold parameter(s) are notsatisfied, the process may proceed according to steps 412-436.

FIG. 5A is a block diagram 500 illustrating one or more screenshots ofclient computing device 502, according to one or more exemplaryembodiments. As illustrated, client device 502 may be a mobile deviceassociated with a payer. For example, client device 502 may beassociated with client device 102 (explained in detail above). Clientdevice 502 may include display 504. Display 504 may be currentlydisplaying screenshot 505. Screenshot 505 may illustrate an example GUIthat may be generated and displayed to the payer upon receiving one ormore verification offers from verification network 105.

As shown, screenshot 505 includes one or more verification offers 503 ₁,503 ₂, and 503 ₃ (generally “verification offer 503”). Verificationoffer 503 ₁ may include a graphic 508 ₁ associated with a verificationinstitution 110 ₁ and verification fee 506 ₁ associated therewith.Verification offer 503 ₂ may include a graphic 508 ₂ associated with averification institution 110 ₂ and verification fee 506 ₂ associatedtherewith. Verification offer 503 ₃ may include a graphic 508 ₃associated with a verification institution 110 ₃ and verification fee506 ₃ associated therewith. Each verification offer 503 may beselectable by the payer.

FIG. 5B is a block diagram 550 illustrating one or more screenshots ofclient computing device 502, according to one or more exemplaryembodiments. As illustrated, display 504 of client device 502 may becurrently displaying screenshot 555. Screenshot 555 may illustrate anexample GUI that may be generated and displayed to the payer upon thepayer providing input accepting or rejection a verification offer.

As shown, when a payer provides a select and drag input (e.g., swiperight) the display may update to reveal screenshot 555. The payer may beprompted with one or more options for each verification offer 503. Forexample, verification offer 503 ₁ may include a graphic 552 ₁ associatedwith a rejection of the verification offer (e.g. “deny”) and graphic 554₁ associated with an approval of the verification offer (e.g.“approve”). Verification offer 503 ₂ may include a graphic 552 ₂associated with a rejection of the verification offer (e.g. “deny”) andgraphic 554 ₂ associated with an approval of the verification offer(e.g. “approve”). Verification offer 503 ₃ may include a graphic 552 ₃associated with a rejection of the verification offer (e.g. “deny”) andgraphic 554 ₃ associated with an approval of the verification offer(e.g. “approve”).

Upon receiving an input via graphic 552 or graphic 554, client device102 may transmit to verification network 105 a rejection or approval ofeach verification offer.

It is understood that FIGS. 5A and 5B illustrate an example arrangement,presentation and selection operations of verification offers 503 ondisplay 504 of client device 502. It is understood that verificationoffers 503 may be arranged and presented in any suitable manner ondisplay 504, and that verification offers 503 may be selected by one ormore suitable input operations including operations other than a selectand drag input (e.g., swipe right).

FIG. 6 is a block diagram illustrating an exemplary computingenvironment 600, according to one or more embodiments. Computingenvironment 600 may include computing system 602 and computing system652. Computing system 602 may be representative of client device 102.Computing system 652 may be representative of management system 202 orverification network 105.

Computing system 602 may include processor 604, memory 606, storage 608,and network interface 610. In some embodiments, computing system 602 maybe coupled to one or more I/O device(s) 612 (e.g., keyboard, mouse,etc.).

Processor 604 may retrieve and execute program code 618 (i.e.,programming instructions) stored in memory 606, as well as store andretrieve application data. Processor 604 may be included to berepresentative of a single processor, multiple processors, a singleprocessor having multiple processing cores, and the like. Networkinterface 610 may be any type of network communications allowingcomputing system 602 to communicate externally via computing network605. For example, network interface 610 may be configured to enableexternal communication with computing system 652.

Storage 608 may be, for example, a disk storage device. Although shownas a single unit, storage 608 may be a combination of fixed and/orremovable storage devices, such as fixed disk drives, removable memorycards, optical storage, network attached storage (NAS), storage areanetwork (SAN), and the like. Storage 608 may include wallet 620. Wallet620 may be configured to store one or more key pairs associated with auser's blockchain account. Each key pair may include a private key and acorresponding public key.

Memory 606 may include application 614, operating system 616 and programcode 618. In some examples, memory 606 may include a geolocation agent(not shown). Program code 618 may be accessed by processor 604 forprocessing (i.e., executing program instructions). Program code 618 mayinclude, for example, executable instructions for communicating withcomputing system 652 to display one or more pages of website 662.Application 614 may enable a user of computing system 602 to access afunctionality of computing system 652. For example, application 614 mayaccess content managed by computing system 652, such as website 662. Thecontent that is displayed to a user of computing system 602 may betransmitted from computing system 652 to computing system 602, andsubsequently processed by application 614 for display through a GUI ofcomputing system 602.

Computing system 652 may include processor 654, memory 656, storage 658,and network interface 660. In some embodiments, computing system 652 maybe coupled to one or more I/O device(s) 674. In some embodiments,computing system 652 may be in communication with database 204.

Processor 654 may retrieve and execute program code 666 (i.e.,programming instructions) stored in memory 656, as well as store andretrieve application data. Processor 654 is included to berepresentative of a single processor, multiple processors, a singleprocessor having multiple processing cores, and the like. Networkinterface 660 may be any type of network communications enablingcomputing system 652 to communicate externally via computing network605. For example, network interface 660 may allow computing system 652to communicate with computer system 602.

Storage 658 may be, for example, a disk storage device. Although shownas a single unit, storage 658 may be a combination of fixed and/orremovable storage devices, such as fixed disk drives, removable memorycards, optical storage, network attached storage (NAS), storage areanetwork (SAN), and the like.

Memory 656 may include website 662, operating system 664, program code666, account handler 668, verification agent 670, and transaction agent672. Program code 666 may be accessed by processor 654 for processing(i.e., executing program instructions). Program code 666 may include,for example, executable instructions configured to perform stepsdiscussed above in conjunction with FIGS. 3-4. As an example, processor654 may access program code 666 to perform operations for verifying acryptocurrency transaction. Website 662 may be accessed by computingsystem 602. For example, website 662 may include content accessed bycomputing system 602 via a web browser or application.

Account handler 668 may be configured to manage one or more accountsassociated with one or more users. For example, account handler 668 maycommunicate with database 204 that stores one or more key pairs 215(FIG. 2). Account handler 668 may generate one or more key pairs upon auser registering with verification network 105. In some embodiments,account handler 668 may generate one or more key pairs stored oncomputing system 602.

Transaction agent 672 may be configured to manage one or moretransactions associated with each account. For example, transactionagent 672 may act as a “middle-man” between computing system 602 and oneor more verification institutions 110. In operation, for example,transaction agent 672 may transmit the transaction request to one ormore verification institutions 110. Upon receiving input from computingsystem 602 that corresponds to a selection of a verification offer,transaction agent 672 may transmit the offer acceptance to therespective verification institution 110.

Verification agent 670 may be configured to verify one or moretransactions between a payer and a payee. Verification agent 670 may,for example, verify a first signature transmitted from client device 602to verification network 105 that signals the initiation of thetransaction. The first signature may correspond to a first signatureneeded for a multi-signature transaction. Verification agent 670 mayfurther be configured to verify a second signature transmitted from averification institution, in response to generation of a verificationoffer from verification institution 110. The second signature maycorrespond to a second signature (or additional signature) needed for amulti-signature transaction.

Although not shown in FIG. 6, each verification institution 110 may alsoinclude one or more of the components shown in computing system 652. Forexample, verification institution 110 may include a processor similar toprocessor 654, memory similar to memory 656, storage similar to storage658, a network interface similar to network interface 660 and, in someexamples, one or more I/O devices similar to I/O device(s) 674. Similarto memory 656 of computing system 652, the memory of verificationinstitution 110 may also include an operating system similar tooperating system 664 and program code similar to program code 666. Incontrast to memory 656 of computing system 652, the memory ofverification institution 110 may store application 262 (FIG. 2) and riskanalyzer 264 (FIG. 2), and the program code of verification institution110 may include program instructions relating to application 260 andrisk analyzer 264.

It is understood that aspects of the present disclosure may beimplemented in hardware or software or a combination of hardware andsoftware. In one example, aspects of the present disclosure may beimplemented as a program product for use with a computer system. Theprogram(s) of the program product define functions of the embodiments(including the methods described herein) and can be contained on avariety of computer-readable storage media. Illustrativecomputer-readable storage media include, but are not limited to: (i)non-writable storage media (e.g., read-only memory (ROM) devices withina computer, such as compact disk-ROM (CD-ROM) disks readable by a CD-ROMdrive, flash memory, ROM chips, or any type of solid-state non-volatilememory) on which information is permanently stored; and (ii) writablestorage media (e.g., floppy disks within a diskette drive or hard-diskdrive or any type of solid state random-access memory (RAM)) on whichalterable information is stored. Such computer-readable storage media,when carrying computer-readable instructions that direct the functionsof the present disclosure, are embodiments of the present disclosure.

While the present disclosure has been discussed in terms of certainembodiments, it should be appreciated that the present disclosure is notso limited. The embodiments are explained herein by way of example, andthere are numerous modifications, variations and other embodiments thatmay be employed that would still be within the scope of the presentdisclosure.

The invention claimed is:
 1. A system for authorizing a blockchaintransaction, comprising: a verification network in communication with atleast a payer computing device, a verification pool that comprises oneor more verification computing systems, and a blockchain network, theverification network comprising: a computing system having a processorand a memory having programming instructions stored thereon, saidprogramming instructions, when executed by the processor, causing thecomputing system to: receive, from the payer computing device, atransaction request for a blockchain transaction, and broadcast averification request in response to the transaction request to the oneor more verification computing systems in the verification pool; the oneor more verification computing systems configured to generate andtransmit one or more verification offers to the payer computing deviceresponsive to said verification request; the payer computing device, inresponse to receiving the one or more verification offers, configured totransmit a selection of at least one offer from among the one or moreverification offers to the verification network, said selectionconfirming said blockchain transaction; and the verification network,upon receiving said selection, further configured to broadcast theblockchain transaction to the blockchain network, in accordance with theselection of the at least one offer and the transaction request.
 2. Thesystem of claim 1, wherein the one or more verification computingsystems is further configured to assess the transaction request,determine whether the transaction request satisfies one or morepre-agreed threshold parameters, and perfect the blockchain transactionaccording to said determination.
 3. The system of claim 1, wherein theverification request comprises a partially-signed transaction request,said one or more verification computing systems further configured togenerate one or more signatures for inclusion in the one or moreverification offers.
 4. The system of claim 3, wherein thepartially-signed transaction request comprises a first signaturegenerated by a first private key associated with the payer computingdevice, and wherein the one or more verification computing systems areconfigured to generate a second signature using a second private key. 5.The system of claim 4, wherein the verification network is configured todetermine that the blockchain transaction includes the first signaturebased on the transaction request and the second signature based on theselection of the at least one offer.
 6. The system of claim 1, whereinthe blockchain transaction is configured to be reversible via averification computing system among the one or more verificationcomputing systems associated with the selection of the at least oneoffer, when the blockchain transaction is determined to be fraudulent.7. The system of claim 1, wherein the verification network is configuredto at least one of confirm that the transaction request includes a firstsignature, verify the first signature and verify a second signature. 8.The system of claim 1, wherein the transaction request further includesat least one of a public key associated with the payer computing device,payee address information associated with a payee, a public keyassociated with the payee, a transaction amount and a specification oftwo or more signatures to perfect the blockchain transaction.
 9. Thesystem of claim 1, wherein the verification request includes at leastone of a public address associated with the payer computing device, apublic address associated with a payee, a transaction amount and anindication of a predetermined number of second signatures to be obtainedfrom the verification pool to complete the blockchain transaction. 10.The system of claim 1, wherein the verification pool is configured togenerate the one or more verification offers based on a risk analysis ofthe blockchain transaction.
 11. The system of claim 10, wherein each ofthe one or more verification offers further includes at least one of anindication of a transaction risk based on the risk analysis, averification charge based on the risk analysis, and a surge charge basedon a volume of verifications requests received by the verification pool.12. The system of claim 10, wherein the one or more verificationcomputing systems are configured to assess a risk associated withverifying the blockchain transaction based on at least one of a locationof the payer computing device, a transaction amount, a frequency oftransactions between the payer and a payee, an identity of the payee, atime of the transaction request and a purchase history of the payer. 13.The system of claim 1, wherein, responsive to the broadcast verificationrequest, at least one system among the one or more verificationcomputing systems is configured to at least one of prompt the payercomputing device to authenticate with said at least one system, confirman identity of a payer associated with the payer computing device andverify that an account associated with the payer includes a transactionamount.
 14. The system of claim 1, wherein the one or more verificationoffers represent competing offers having different transaction costsassociated with the respective one or more verification computingsystems.
 15. The system of claim 1, wherein the verification network isconfigured to at least one of record transaction data associated withthe blockchain transaction in a database and notify the verificationpool of the selected at least one offer.
 16. The system of claim 1,wherein the one or more verification offers transmitted to the payercomputing device are configured to be displayed and selectable via agraphical user interface of the payer computing device.
 17. A method ofauthorizing a blockchain transaction, the method comprising: providing averification network in communication with at least a payer computingdevice associated with a payer, a verification pool that comprises oneor more verification computing systems, and a blockchain network, theverification network comprising a computing system having a processorand a memory having programming instructions stored thereon, saidprocessor configured to execute the programming instructions; receiving,by the verification network, from the payer computing device, atransaction request for the blockchain transaction; broadcasting, by theverification network, a verification request in response to thetransaction request to the one or more verification computing systems inthe verification pool; generating and transmitting, by at least one ofthe one or more verification computing systems, one or more verificationoffers to the payer computer device responsive to said verificationrequest; confirming, by the payer computing device, the blockchaintransaction by selecting at least one offer from among the one or moreverification offers; receiving, by the verification network, from thepayer computing device, a selection of the at least one offer; andbroadcasting, by the verification network, the blockchain transaction tothe blockchain network, in accordance with the selection of the at leastone offer and the transaction request.
 18. The method of claim 17,further comprising: assessing, by the one or more verification computingsystems, the transaction request; determining, by the one or moreverification computing systems, whether the transaction requestsatisfies one or more pre-agreed threshold parameters; and perfecting,by the one or more verification computing systems, the blockchaintransaction according to said determining.
 19. The method of claim 17,wherein the verification request comprises a partially-signedtransaction request, the method further comprising: generating, by saidone or more verification computing systems, one or more signatures forinclusion in the one or more verification offers.
 20. The method ofclaim 19, wherein the partially-signed transaction request comprises afirst signature generated by a first private key associated with thepayer computing device, the method further comprising: generating, bythe one or more verification computing systems, a second signature usinga second private key.
 21. The method of claim 20, further comprising:determining, by the verification network, that the blockchaintransaction includes the first signature based on the transactionrequest and the second signature based on the selection of the at leastone offer.
 22. The method of claim 17, wherein the blockchaintransaction is configured to be reversible via a verification computingsystem among the one or more verification computing systems associatedwith the selection of the at least one offer, when the blockchaintransaction is determined to be fraudulent.
 23. The method of claim 17,wherein the method further comprises at least one of: confirming, by theverification network, that the transaction request includes a firstsignature; verifying, by the verification network, the first signature;and verifying, by the verification network, a second signature.
 24. Themethod of claim 17, wherein the transaction request further includes atleast one of a public key associated with the payer computing device,payee address information associated with a payee, a public keyassociated with the payee, a transaction amount and a specification oftwo or more signatures to perfect the blockchain transaction.
 25. Themethod of claim 17, wherein the verification request includes at leastone of a public address associated with the payer computing device, apublic address associated with a payee, a transaction amount and anindication of a predetermined number of second signatures to be obtainedfrom the verification pool to complete the blockchain transaction. 26.The method of claim 17, further comprising: generating, by theverification pool, the one or more verification offers based on a riskanalysis of the blockchain transaction.
 27. The method of claim 26,wherein each of the one or more verification offers further includes atleast one of an indication of a transaction risk based on the riskanalysis, a verification charge based on the risk analysis, and a surgecharge based on a volume of verifications requests received by theverification pool.
 28. The method of claim 26, further comprising:assessing, by the one or more verification computing systems, a riskassociated with verifying the blockchain transaction based on at leastone of a location of the payer computing device, a transaction amount, afrequency of transactions between the payer and a payee, an identity ofthe payee, a time of the transaction request and a purchase history ofthe payer.
 29. The method of claim 17, wherein, responsive to thebroadcast verification request, the method further comprises at leastof: prompting, by at least one system among the one or more verificationcomputing systems, the payer computing device to authenticate with saidat least one system; confirming, by the at least one system, an identityof a payer associated with the payer computing device; and verifying, bythe at least one system, that an account associated with the payerincludes a transaction amount.
 30. The method of claim 17, furthercomprising: displaying, via a graphical user interface of the payercomputing system, the one or more verification offers such that said oneor more verification offers are selectable via said graphical userinterface.